DE2814483C2 - Process for preparing a chain and placing it in a hand loom and hand loom for carrying out the process - Google Patents

Description

30th

The invention relates to a method for preparing a warp and inserting the same into a hand loom, in which an endless, to be introduced in healds Warp thread between two trees of the loom continuously until reaching the desired one Weaving width is guided back and forth.

The invention is also directed to a hand loom for performing this method.

Such a method and such a loom are used in particular in the arts and crafts Amateurs.

Such a method is described in French patent specification 14 17 247. There are the teeth of the comb closed in such a way that, in order to form a warp thread path by winding around the entire loom, it would be necessary to pass the thread between two comb blades with each winding process leave, which is an inexpedient and lengthy process

The invention is based on the task of preparing a chain and inserting it into to make a hand loom much easier, especially the necessary working hours shorten. Here, the comb is open at the top when the warp thread is inserted, in a manner known per se educated

The measure according to the invention solves the problem surprisingly simply in that the Before inserting it into the loom, thread the warp thread through the aligned eyelets on the outside of the Loom's prepared pile of healds is guided and then with every back and forth lead a strand is cut from the pile between the trees and inserted into the loom. Preferably, the warp thread is slackened during each to-and-fro movement between the two trees laid again in several loops to increase the length of the warp thread

An inventive hand loom for implementing the latter measure, consisting of a loom with a warp beam, cloth roll and Webkamm, characterized in that between warp beam and cloth beam two Web ^r mimic mutually displaceable carrier with guide hook comprising transverse rods are arranged.

By the measure according to the invention, the preparation of a chain and insertion of the same in a hand loom much easier, the necessary working time shortened It is essential that a endless warp thread is not only introduced into the heddles in the loom, but outside of the same.

The so-called warping process is no longer necessary because the chain is inserted immediately. The chain is no more saved

Difficulties as the loom according to the German patent 2 59 183, where a thread the needle had to be made successively in each strand, no longer occur. This was the case there because the healds remained in their place on the loom, while with the hand loom according to the invention the threading of the thread into the healds takes place beforehand in a moment when they are outside the loom and are stacked on the carrier .

The problem could not be solved by the measures according to DE-PS 8 36 025, where the Strands made up of two elements, namely the elements firmly connected to the traverse and the elements firmly connected to the detachable traverse connected elements existed. To carry out the chain shearing, the Traverse with its stranded elements can be removed in order to put the thread into the cavities of the stranded wires to be able to bring in. The warp threads had to be inserted individually.

Exemplary embodiments of the invention are explained in more detail below with reference to the drawing. This shows in

Fig. 1 shows the general process of inserting the warp threads and shedding on a conventional one Loom;

2 shows a first embodiment of the method according to the invention;

F i g. Fig. 3 is a top plan view of the two shaft warp thread assembly for a simple weave weave;

4 shows an arrangement of the warp threads with four Shafts;

FIGS. 5 and 6 show a further embodiment of the Invention wherein strands of polygonal shape are used;

F i g. 7 a device which is intended to enable the length of the continuously inserted warp thread to be increased.

In the drawing, 1 denotes a front tree; 2 a rear rotatable warp beam; 3 are strands; 4 is the warp thread and 5 is a comb.

The essence of the invention is illustrated by the comparison of FIG. 1 (usual procedure) with FIG. 2 (Embodiment according to the invention) clearly. It is essential to insert the chain and the strands as well the distribution of the latter.

According to FIG. 2 to 4 a comb 5 open at the top is used in the manner of a rake. The strands 3 load-bearing frames are removable; also the strands 3

can be detached from them and stacked on a carrier 6, with a guide and storage device for the strands arranged one above the other in the form of Rods, profiles or the like. Is provided.

The process of arranging the chain has three phases.

Phase 1: Insertion of the chain and the strands

Before inserting the chain and strands, the hand loom only points trees 1 and 2 under suitable Distance from each other, depending on the length of the fabric to be produced, as well as the open comb and the strands 3 stacked on a separate carrier 6. Each strand 3 has an eyelet 7 for the Warp thread and one or two further eyelets, of which only eyelets 8 and 9 in the exemplary embodiment are shown, with which the strands 3 are attached to assembly rods and thus a good Allow the strands to be stacked on the carrier 6.

The warp thread (FIG. 2) is first inserted into the entire arrangement of the strands 3 and then attached with its end to the rear warp beam 2. A strand 3 is then released from the stack, the warp thread remaining in the eyelet 7. The warp thread f, which passes through all of the stacked strands 3, is then pulled up to the front tree 1, after it has previously been inserted into the comb 5. The raised heddle 3 occupies a position on a first length / j of the warp thread between the warp beam 2 and the fabric beam 1 in front of the comb 5.

The warp thread / is then passed around a pin 14 'provided on the fabric beam 1 and then returns in a similar process in the opposite direction to the rear warp beam 2; in this way a second length h of the warp thread is formed which is provided with a strand 3.

The arrangement of the chain in a continuous form has the consequence that its length is limited, namely by the distance separating the two trees 1 and 2 (Fig. 2).

On the other hand, it may be desirable to extend the chain to a very considerable extent without in return, neither the distance separating the trees nor the circumference of the handloom frame is considerable Dimensions to enlarge.

This can be achieved by the fact that the frame with a device according to the type of FIG. 7th or with another device performing the same function.

In the case of the in FIG. 7 are two in the loom between the trees 1, 2 Slidable supports 14 and 15 are provided, which are at a suitable distance on guide or slide rails a chassis 16 are guided and are thus translationally displaceable relative to one another in order in this way to allow a change in the distance separating them. To the supports 14 and 15 are horizontal Connected cross bars 18, on which guide hooks 17 are attached. The free end of the warp thread that has previously been introduced into the stack of strands 3 stored on the carrier 6, the goods tree 1 attached. After the thread has been inserted into the comb 5 and provided with a strand 3, the Thread guided back and forth between the carriers 14, 15 in a zigzag shape, revolves around the guide hooks 17 and 17 after it has been guided over the transverse rods 18, it runs around a fixed anchoring point on the warp beam 2 hereabouts. The thread is then returned to the tree 1, following the same path as the first Length of the warp thread traverses in the opposite direction

The number of transverse rods 18 on the one hand and the spacing of the supports 14 and 15 on the other hand increase the length of the continuously inserted chain is considerable.

After the chain has been inserted, the carriers 14 and 15 are continuously moved against one another and At the same time, it winds the released chain onto the rear warp beam 2. Are the carriers 14 and 15 are adjacent to one another, it is sufficient to close the warp thread from the guide hook 17 carrying it to solve. Then you loosen the cross bars 18 on which the guide hooks 17 were attached. In the end the vertically translationally movable transverse rod 18 is continuously lowered relative to the chassis 16, while the rear warp beam 2 completes the winding of the warp until the warp threads are taut.

Finally, one takes off the supports 14 and 15 and moves on to phase 2.

Phase 2: Distribution of the strands

This work phase consists in arranging the strands 3 with a view to the fabric weave to be produced. For a normal weave, it is sufficient to move the strands 3 individually so that they are in two areas are distributed, namely as straight strands 3p and as odd strands 3a which can be seen in the top view the in F i g. 3 schematically reproduced arrangement leads to a fabric with a complicated weave, For example, for cloth, cotton, satin, satin silk or the like, the strands are arranged in several rows corresponding to the respective fabric weave, which in the plan view corresponds schematically to the one shown in FIG. 4 reproduced Arrangement showing the distribution for a chevron weave.

Phase 3: Unification of the same strands
Rows of heald frames

It is now necessary to connect all the strands 3 of the same row to one another so that the Warp thread can be moved up and down for shedding.

For this purpose, rods 11 and 12 are inserted into the eyes 8 and 9 of the strands 3. The rods 11, 12 are connected at their ends to vertical side supports 13 and together with these form the Heald frames. It goes without saying that there are as many heald frames as there are rows of heddles are.

The same procedure for adjusting and preparing the warp for weaving on a loom can also be used in looms that enable the production of ribbons, braids or braids, soft either with a serge, on whose surface through the play of colors the Warp thread motifs with decorative and decorative effects repeat themselves periodically, or more often with one Cloth binding can be provided.

In such an arrangement, the strands 3 have a polygonal shape (see FIG. 5), these Strands 3 are square in most cases and the strands just as many eyelets 7 for the warp thread cover like the polygon has peaks.

The movement of the strand is then no longer an up and down translational movement, but a Rotation in their plane.

When the loom is assembled, each eyelet 7 of each strand 3 has one in the case of a woven fabric with a sergeband Warp thread added. Each strand 3 is then approximately in the same plane as the warp threads. The rotation of each strand in its plane leads each warp thread one after the other into the upper or lower one Position what leads to shedding.

As with the device described above (see FIG. 2), the strands 3 (see FIG. 6) are on one Carrier 6 stacked so that the eyelets are arranged one above the other. This is how every arrangement becomes

of superimposed eyelets from a continuous one Passed through thread, which is used to form the chain and initially under the stacked strands 3 in the Container 10 is stored. Depending on the type of weave you want, you can eyelet one, two or all of the eyelets use each strand.

A suitable device picks up the respective strand 3 in the desired orientation, namely in Depending on the pattern that you get by crossing the warp threads due to the twist of the Wants to reach Litzen.

For this purpose 4 sheets of drawings

Claims (3)

Patent claims: 1. Procedure for preparing a chain and placing it in a hand loom in which an endless warp thread to be inserted in healds running between two trees of the loom is guided back and forth until the desired weaving width is reached, characterized in that the warp thread is inserted into prepared the loom through the aligned eyes of one outside the loom Strandstapels is guided and then with each back and forth between the Trees each cut a strand from the stack and is used in the loom 2. The method according to claim 1, characterized in that the warp thread during each back and forth each movement between the two trees again in several loops in the sense of a Increase in the length of the warp thread. 3. Hand loom for carrying out the method according to claim 2, consisting of a loom with a warp beam, fabric beam and weaving comb, characterized in that between the warp beam (2) and fabric beam (1) two mutually displaceable carriers (14, 15) with guide hooks in the loom (17) having cross bars (18) are arranged.